Concrete structure.



No. 822,499. PATENTED JUNE 5, 1906, J. P. ANCONA.

CONCRETE STRUCLURIEI.y

APPLICATION FILED Nov. 2a, 1905.

j. ...W 5 W UNITE@ 'STATES PATENT @FFIQIIL JOHN F. ANOONA, or PROOTOR, VERMONT.

CNCRETE STRUCTURE.

Specification of Letters Patent.

latenti-,ed June 5, 1906.

Application med November 28,1905. serial No. 289,454.

citizen of the United States, residing at Proc# tor, in the county of Rutland and State of Vermont, have invented or discovered certain new and useful Improvements in Concrete Structures, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention has for its object to provide hollow or molded cement structures adapted for use as telegraph, telephone, or electriclight poles or for fence-posts, sewer-pipes, conduits, or columns, and which is of such construction that with comparatively thin walls the structure will have relatively great .strength and tenacity. l

To this end the structure comprises a hollow body or` column formed of concrete, molded cement, or other suitableI plastic material which hardens in drying and in which is embedded a series of reinforcing-or strengthening wires or rods, preferably of steel, having a right and left spiral arrangement or disposition in the concrete or molded wal ls in such a manner as to cross each other at intervals, the said wires or rods being preferably tied together at their points of intersection or crossing.

In the accompanying drawings, Figure l. is a vertical section of a pole or column embodying the presentinvention. Fig. 2 is an elevation of the same; and Fig. 3 is a horizontal section of the saine on line 3 3, Fig. 2. Fig. 4 is a detail view showing the preferred method of mounting cross arms or brackets which may beutilized either as steps for climbing the pole or column or which will afford means for attachment of the usual insulators on which electric conducting-wires are supported. Fig. 5 is a detail view showing a manner in which the crossing Wires-may be tied together at a point of intersection.

Referring to the drawings, a denotes a hollow andpreferably somewhat upwardlyta# pering body or column formed of concrete, molded cement, or other suitable hardened plastic material in which are embedded reinforcing wires or rods b, having a right and left spiral arrangement about the Walls in i which they are embedded in such a manner as to cross each other at intervals, where they are preferably tied together', as at c. 'The hollow body or column is preferably provided with a cap d, which may be attached in any suitable manner, as by cementing or otherwise. The columns when intended for use as electric-light, telephone, or telegraphpoles will preferably be provided with a series of outwardly-projecting arms or'brackets consisting of rigliteangular rods c, the inner vertical portions c ol which are preferably wired or otherwise suitably attached to the reinforcing-rods t, embedded in the concrete structures.l

It will be understood that any desired number of the spirally-disposed reinforcing-- rods b, embedded in the plastic material, may be employed. In the circular column herein illustrated a series of eight of such rods are shown in the cross-section, Fig. 3; but any desired greater or lesser number may be employed, according to the strength and tenacity which it ma y be desired to give to the concrete structure.

In the practical embodiment of the invention for use as poles or columns the circular form, as shown in the drawings, will be preferred, although for some purposes rectangular, Octagonal, or other' cross sectional forms' of the structures may be provided.

The outwardly-proj ect-ing arms or brackets e will serve as steps to be used in climbing the pole or column, or they may be utilized by providing a suitable number of the same at or near the top of the pole or column as supports for wires, in which case they may be provided with common glass insulators.

If the structure be employed as a fencepost, the brackets may be modified, sofas to be of suitable form for supporting rails or Wires. A,

Having thus described my invention7 I claim and desire to secure by Letters Pat- 1. A hollow column or structure consisting .R of hardened concrete or other suitable plastic material having embedded therein right and .left hand spirallyedisposed 'reinforcing rods or wires intersecting or crossing each other at IOO intervals, combinedwith outwardly-proj ectl ing brackets the innJer ends of Which are em- 1o ing brackets the inner ends of Which are embedded in the hardened plastic material and bedded in the hardened plastic material. i tied to the reinforcing r'ods or Wires.

2. A hollow column or structure consisting i In' testimony whereof I affix my signature of hardened concrete or other suitable lastic in presence of tWo Witnesses. material having embedded therein rig t and JOHN F. ANCONA.. left hand spirally-disposed reinforcing rods Witnesses: l or Wires intersecting or crossing each other at LATHROP H. BALDWIN,

, intervals, combined with outWardly-project- REDFIELD PROCTQR, Jr. 

